Detachable end frame for engines



July so, 1929. L B, 33mg 4 1,722,798

DETAGHABLE END FRAME FOR ENGINES Original Filed June 18. 1

Patented July 31), 1929.

parts stareestates ernr errat f LEE B. JONES, 0F EVANSVILLE, INDIANA,ASSIGNOR T0 SUNBEAIK ELECTREC MANU- FACTUBIETG COMPANY, OFEVANSVILLRINDIANA, A CORPORATION 0F 11? DIANA.

.D ETACHABLE END 'FR AME FOE ENGINES Application filed. June 18, 1921,Serial No. 47$,6 l. Renewed January 17,1928.

My invention relates to end frames used on prime movers and it hasparticular relation to a frame which closes one side of an engine crankcasing andat the same time serves a number of special purposes whichwill hereinafter be set forth.

One object of my invention is to provide a frame for closing one side ofan engine crank casing; and while I will hereinafter describe the endframe as applied to a particular construction it will be understood thatits use is in many other prime movers wherein it is desired to obtainstructural and operative characteristics analogous to those hereinafterdescribed. p v

The timing mechanism 7 has associated therewith, on the end frame,make-andreak device which is operatively associated with a spark teriorof the frame. 4

A better understanding of my invention, as well asotherobjects thereof,will be apparent by reference to the accompanying drawings;

' in which,

Fig. 1 is an elevational sectional view of the prime mover portion ofthe power plant described in the above identified co-pending'application, the detachable end frame being shown in operat1ve relationwith the remaing der of the mechamsm;

Fig. 2 is a frame showing the interior face thereof; and, Fig. 3 is anelevational view of the end of the crank casing and illustrates theexterior face of the end frame. I V

Referring more particularly to the drawings, one end of the mainassembly unit comprises a crank casing 10 in which is journalled afly-wheel 11. A connecting rod 12 is attached to a piston 13, the latterreciprog v14c of another eating in a cylinder-portion assembly unit 15.Admissmn valves 16 are provided whereby fuel isadmitted from a manifold17 to a space 18 directly above, and

in communication with, thecylinder 14;. To

the left of the space 18 is formed an ignition pocket 19' at the bottomof which is an exhaust port 20 adapted to be closed by an ex haust valve21, the latter being reciprocated by a valve rod 22 which is soassociated with a spring 23 that it is normally held in closet position.I

coil which is mounted on the e20.

perspective view of the end The connecting rod 12is'not joined to'th efly-wheel 11 by theusual til-shaped crankbut, as shown, 1s pinneddirectly thereto at 2%.

A detachable end frame comprises a main ing thereinto and having aninterrupter 33 mounted on the end thereof. A breathing device 81 allowsair to pass through said cap 31 whereby the oil in the bathat the bottomof the casing is drawn up and around the gears and satisfactorilylubricates the same.

The shaft tending upwardly through the frame and being adapted forabutting contact with the rod 22. On the interior end of the shaft 27 isadjustably mountedacrank 35.which is provided with a forked end 36, thelatter 28 also hasmounted thereupon-a cam 28 which actuates a tappet rod3.4; eX-' being adapted to fit over apin or reduced I portion 37 of thecrank pin 24, whereby the crank 35 is rotated. This causes therotationof the shaft 27, and of the intermeshinggears 28 and 80, which, in turn,efiects the recip rocation of therod'3 l and the opening of the exhaustvalve 21. It will be noted that-the crank 35 is secured to the end ofthe shaft 27 by aset screw 38 and it may,ftherefore, have its angularrelation with respect to saidshaft varied by loosening said screw. Ifdesired this angular relation can be adjusted from the outside;Moreover, thegset screw adjustment is only illustrative since any otherequivalent adjusting and securing means can be employed. A spark coil 39is mounted on the exterior of; the end frame.

From a consideration of the above described mechanism the operationthereof is more or less apparent. j When it is desired tov vary therelation between the opening of the exhaust valve and the position ofthe piston I at said opening, the end frame maybe readily detached andthe crank 35 adjusted with re spect to the shaft 27 whereupon anydesired relation may be obtained. v v

The structure which I have heretofore described isespeciallyadvantageous in view of the machine in which I have found itsuse most pertinent, although, as I hav'eabove pointed out, it should notbe understood that I am limiting the use of this structure to internalcombustion engines of the type illustrated. Because of the manner inwhichthe' relation between the crank and the valve is timed extremeaccuracy of alignment is not necessary The yoke or forked end which fitsover the reduced portion 37 functions Y even though-there may be someslight deable feature of structure is emphasized in this field. Endplates may be substituted, one for the other, without knowledge of valvetiming and, in fact, it is the usual practice, when service in'regard torepairs is required, to send the end plate to properly time or adjustthe partsl It is obvious that, because the plate can be sent by itselfand this very important adjustment made, a great deal of time is savedand in addition the cost of repair is sharply decreased because of thelow shipping cost.

While I have described but one embodiment of my invention, manymodifications therein mayoccur to those skilled in the art and I desire,therefore, that same be limited only by the showing of the prior art andby the scope of the appended claims.

- Having thus described my invention what I nowclaim as new and desireto secure by Letters Patent, is: p

V 1. In an internal combustion engine, a crank case and means comprisinga crank therein, an end frame for said case, a spark coil mounted onsaid frame,- shafts ournalled interiorly of said frame, a make-andbreakelement mounted on one of said shafts" in operative relation withsaidcoil, a valve stem actuated by the same shaft, meansconnectinganotheiishaft with said crank, and

gearing between saidshafts.

2. In an internal combustion engine, a

' crankcase and means comprising a crank and a connecting rod therein,an end frame for said case, a spark coil mounted on said frame, shaftsjournalled interiorly of said" frame, a make-and-break element mountedon one of said shafts in operative relation wlth said coil,'a valve stemactuated by the same shaft, means connecting another shaft with saidcrank, gearing between said shafts, and means for varying the relativepositions of said valve steinand said rod. 7

3. In an internal combustion engine,v a crank case and. means comprisinga crank and a connecting rod therein, an end frame for said case, aspark coil mounted on said frame, a shaft journalled in said frame andhaving a make-and-break device mounted thereon in operative relationwith said coil,a valve stem actuated by the same shaft, a gear wheel onsaid shaft, another gear wheel'driving said first gear and mounted .onanother shaft, a crank connecting said last-named shaft to said rod, andmeans for varying the relative positions of said valve stem and saidrod. a

4. In an internal combustion engine, a crank case and means compris ng acrank and a connecting rod therein, an end frame for said case, a sparkcoilmounted on said frame, a shaft journalled in sa d frame and having amake-and-breakdevice mounted thereon in operative relation with saidcoil,

a valve stem actuated by the same shaft, a. 7

gear wheel on said shaft, another gear wheel driving said first gear andmounted on another shaft, a crank connecting said lastnained shaft tosaid rod, and means whereby said crank may beturned loosely about saidsecond shaft for varying the relative posi tions of said valve stem andsaid rod.

5. In an internal combustion, engine, a crank case and means comprisinga crank and a connecting rod therein, an end frame for said case, aspark case mounted on said frame, a shaft journalled in said frame andhaving a make-and-break 'device'mounted thereon inoperative relationwith said coil, a valve stem actuated bythe sameshaft, a gear wheelonmsaid shaft, another gear wheel driving said first gear and mounted onanother shaft, a crank connecting said "last-named shaft to said rod,and means for varying therelative positions of said valve stem and saidrod, the axes about which said second shaft and said main crankfrotatebe ing coincident.

6. In a prime mover, a crank case, a detachable end frame for the latterhaving a bracket cast integrally on the interior thereof,

and shafts extending betweenthe body of said frame and said bracket. 7

7 Ina prime mover, a crankcase, a detachable end frame for the latterhavinga bracket cast integrally onthe interior thereof, shafts extendingbetween. the body of said frame and said bracket, cooperativegears-positioned on said shafts eXteriorly bf'said frame, and a cappiece covering said gears.

8. In a prime mover, a crank case, a detachableend frame for the latterhaving abracket east integrally on .theinterior therei of, shaftsextending between the body of 7 said frame and said bracket, a coilmounted on said frame, an interruptor device assotachalole end frameciated with the latter, and a make-and-break device on one of saidshafts cooperating with said interruptor device.

9. In a prime mover, a crank case, a defor the latter having a bracketcast integrally on the interior thereof, shafts extending between thebody of said frame and said bracket, cooperative gears positioned onsaid shafts exteriorly of said a coil mounted on said frame, a capframe,

an interruptor deiece coverin said ears vice mounted on said cap piece,and means on one of said shafts extending 1nto and cooperating with saidinterruptor device.

10. In a prime mover, a. crank case and means comprising a connectingrod and crank therein, a detachable end frame forsaid case, valveactuating shafts in said end frame,and a crank adjustably mounted on oneof said shafts and having a forkedend engaging a portion of said rod.

In witness whereof, I vhave hereunto subscribed my name.

LEE B. JONES.

